<EP-584CD5AB95AE4A3A879836122994DB42>
>> > So, in which cases does this issue manifest itself? From the code we can
>> > read what it does, but what is causing an IP address to change to
>> > something else? What's the use case and environment for this to happen?
>>
>> Here MAC Address is changing. Below is scenario:
>> 1. Ethernet is up with some MAC Address and connman creates ipdevice
>> with that address
>> 2. After some time if MAC Address is changed then MAC Address is not
>> updated in connman
>> 3. When "Ethernet" property of service is obtained then it returns
>> initial MAC address, not the updated one.
>>
>> I'm not sure if it is a valid case where device's MAC Address is
>> changed but in Ubuntu you can cross check by updating MAC address for
>> ethernet using "ifconfig" and then getting service property using
>> connmanctl.
>>
>> In my case there is a device where MAC Address is set by some other
>> process which sometimes starts after connman is started. Initially
>> MAC Address for ethernet is set as FF:FF:FF:FF:FF:FF by kernel. But
>> after MAC Address is updated by other process it is not reflected in
>> connman's service.
> If the MAC address changes, the current service needs to be
> disconnected, as another one may have a different IP address
> configuration method defined based on the MAC address. Either that other
> service exists saved to disk or matched from another
> pre-provisioned .config file.
>
> So once the MAC address changes, one needs to disconnect the existing
> service and have ConnMan apply the correct settings according to that
> new MAC address.
Disconnecting the service doesn't change the Ethernet property of service.
I had a service named ethernet_e8039a65a6fc_cable with MAC Address
E8:03:9A:65:A6:FC
Service's ethernet property was
"Ethernet = [ Method=auto, Interface=eth0, Address=E8:03:9A:65:A6:FC, MTU=1500
]"
Now when I changed the MAC Address for ethernet using ifconfig
"ifconfig eth0 hw ether 00:11:22:33:44:55"
Service's ethernet property remained same
"Ethernet = [ Method=auto, Interface=eth0, Address=E8:03:9A:65:A6:FC, MTU=1500
]"
Even after I disconnected the service using connmanctl then also it remained
the same
I even tried to disable and enable ethernet but with no success, Address in
Ethernet
property was never updated to the newer one.
Am I missing any step here?
>> >> ---
>> >> src/ipconfig.c | 4 ++++
>> >> 1 file changed, 4 insertions(+)
>> >>
>> >> diff --git a/src/ipconfig.c b/src/ipconfig.c
>> >> index f8c148b..eb18533 100644
>> >> --- a/src/ipconfig.c
> >> +++ b/src/ipconfig.c
>> >> @@ -508,6 +508,10 @@ void __connman_ipconfig_newlink(int index, unsigned
>> >> short type,
>> >> index, type, type2str(type));
>> >>
>> >> update:
>> >> + if (g_strcmp0(ipdevice->address, address) != 0) {
>> >> + g_free(ipdevice->address);
>> >> + ipdevice->address = g_strdup(address);
>> >> + }
>> >> ipdevice->mtu = mtu;
>> >>
>> >> update_stats(ipdevice, ifname, stats);
>>
>> > Should something happen if DHCP is in use and a a different address gets
>> > set...?
>>
>> Here MAC Address of device is getting changed. I didn't observed any issue
>> with DHCP or
>> manual configuration.
>My bad, I thought ipdevice->address was pointing at an IP address...
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